28.5CHANGEVARS facility

The CHANGEVARS facility allows for a real-time dynamic adjustment of many of the parameters of the FCIQMC calculation.
A file (which must be named CHANGEVARS) can be created in the working directory of the calculation, which contains one
or more lines detailing changes to system parameters, as OPTIONnew_value (note no `=').
Each updated option must be specified on a separate line. The options available via
the CHANGEVARS interface are summarized in Table 14.